At Bootleg, Inc., we love that every part of the upper assembly is totally customizable, and that is why we strive to make the best custom AR parts. Pick the upper receiver for sale that fits your needs; there’s no need to buy a complete upper assembly unless you want to! Our lightweight mil-spec Complete Upper Receiver offers a durable upper receiver with 1913 rail for mounting accessories and optics. Start your upper assembly right with our Mil-Spec Complete Upper Receiver today!



  • Machined from forged 7075 aluminum to keep it light
  • Mil-spec hard anodizing for durability
  • Captured dust cover door pin eliminating the need for the E clip

Bootleg - AR15 Flat Top Mil Spec Upper Receiver with M4 Feed Ramps

  • We would like to congratulate you on your choice of the Bootleg, Inc. products. We hope that, above all, you are satisfied with the AR 15 handguard rail system, upper receiver kit, or other custom AR parts you have received. Bootleg’s custom AR parts are manufactured in the United States of America using only highly specialized equipment and machines that are capable of bringing to life the sophisticated design and engineering that went into creating each product.


    Should you be dissatisfied with the custom AR parts you have received, Bootleg, Inc. offers a 30 day return, refund, and exchange policy.  If the return or exchange any of your products is necessary, please contact Bootleg Inc. customer service via telephone: 208-914-3300 or email:


    In faith of our business practices, we do value and guarantee your privacy.  All information submitted to Bootleg, Inc. will be kept confidential and stored as part of our secure database and will never be sold, borrowed, or shared with any outside entity.